Thank you all so much.
He made it through the night.
He is still in a serious, but stable condition.
And they still arnt entirely sure whats causing it, but there biggest guess is definately snail bait.

He is heavily sedated as he started to spasm again, he's back to his twitching.
He is getting his stomach pumped every three hours.
They want to keep him calm which means no visiting till tommorow.
I asked if he would be ok, but I was told he is still in the woods..
Im just relieved my fighter made it through the night, thanks again for all the encouragement and support.
I'll update whenever I hear anything else..

Good news, Roly is home.
He is still walking funny and has small muscle twitches.
The vet said they pumped him about another two times, but nothing was coming out and they are hoping he may poop it out.
He said there are still risks he will start spasming again, and if so to bring him straight in. Just keep him as calm as possible because excitement will encourage the spasms apparently.
Apart from his dizzy walk and his twitching, he is happy and wagging his tail, but still a bit groggy.
My year of telling people bad news about their pets, and that they may not make it, and too think I would be the person that gets the bad news!
Im thinking back to Thursday night, and it feels like a dream, possibly the scariest night of my life..
We are going to talk to our neighbours and tell them what happened, maybe we'll find out where he got the bait from and warn others that it may be around.
I'll update you if Roly gets worse or better.
Your encouragement really helped, I cant thank you all enough.